Steam superheater



.Eufiy 29, 19240 1,503,163

' A. JEAVONS STEAM SUPERHEATER Original Filed July v. 1920 Patented July 29, 1924.

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nnenaivn, nssrsivoa To JOHN Tammi:

(wonvemmwo Hummer wonvnanerarron, ENGLAND.

s re-m surnarrnn'rna.

ci linal anemia-neem 7; i920. serial ladies e543. Divided and this application filed scatter is,

To allmvhom concern: r

Be it known that I, ALBERT JnnvoNs,fa subj ect of the King of Great Britain',"residing atEttingshall, YVolverhampton, in the county of S tajfford,;England, have invented certain new and useful Improvements in Steam Superheaters, of which the following is a specification.

This application is adivision of my British application, Serial No. 394,543, filed July 7, 1920.

This invention relates to a superheater in which the steam which passes from a boiler isheated on its passage through a number of bent pipes which are placed in position to be exposed to the products of combustion, such as in a flue which passes from a boiler to a chimney, the steam passing through such pipes from one box or header to another; and has for its object improved means for detachably connecting the ends of the bent pipes with the headers. According to this invention, the ends of a bent pipe which are to be securely connected with two parallel headers respectively, and which are directed outwards from one another, are formed with shoulders, respectively, by which, through the medium of sockets, the ends are thrust apart by a suitable screw'device. V

In order that the invention may be clearly understood it will now be described by reference to the drawings in which Figure 1 represents a side view showing two boxes or headers and one of the bent pipes which communicates between them.

Fig. 2 represents on an enlarged scale, a view of the upper portion of Fig. 1 showing the connection between the upper ends of the bent pipe and the boxes or headers; and

Fig. 3 is a transverse section taken on the line 3--3 of Fig. 2.

In the embodiment illustrated the boxes or headers A, A parallel each other and are 1923. semi No. 666,203.

from one another, as shown, andare formed with taper enlargements b which enter cor respondinglytapered or flare'dholes in the inner sides of t'heboxes. Whena bent pipe B has been sprung into place-with itsnez Zles b respectively, entering tapered holes of the box, a spreader C, which consists of a pair of sockets, a, of horse-shoe shape in cross section from their outer to near their inner ends and form straddling members for the pipe, and a right and left screw rod 0 which is screwed into the inner ends of the sockets and has a middle portion which is shaped to be turned by a spanner, is passed over the ends of the pipe by lowering it down, with the open sides of the sockets downwards, until the sides of the sockets have passed down opposite sides of the ends of the pipe and the crowns of the sockets rest on the tops thereof straddling the pipe.

The screw 0 is then turned to move the sockets apart from one another, and the outer ends of the sockets come against shoulders at the inner ends of the enlargements b of the pipe, and as the sockets are then forced out by continuing to turn the screw c the tapered ends of the pipe are forced tightly into the tapered holes of the boxes. In order to avoid risk that the sockets will rise in relation to the bent ends of the pipe B, the forward ends of the sockets are bevelled, and the shoulders at the backs of the enlargements b are correspondingly undercut so that the bevelled ends of the sockets enter somewhat within the backs of the enlargements. Should one of the bent pipes B V leak or otherwise become damaged and need to be replaced, it is readily removed by turning the screw 0 in the opposite direction to that in which it has been turned to tighten up the sockets, and when the sockets have thus been sufficiently slackened, the device C can be removed from the upper ends of the pipe and the ends be then sprung out of the holes of the boxes A, A into which they have been previously tightened, 1 and then the pipe removed and a fresh one put in'position and tightened up within the holes of the boxes. The inner ends of the sockets c are preferably adapted to be held each by a spanner while the screw 0 is 1 being screwed up. The boxes A, A are prevented from being forced apart, in fixing the pipes B, by any suitable means, such openings therethrough to pass over the boxes, keyways It being conveniently formed in the openings through the plates into which keys may be driven to ensure against the boxes turning in relation to one another.

I claim: a

In a superheater the combination with a pair of high pressure and high temperature headers having openings arranged in pairs with the openings of each pair in axial alinement, said openings being acutely tapered;, of a superheater section having oppositely disposed outwardly extending terminal portions arranged in axial alinement and tapered to correspond with the header openings said tapered portions terminating inwardly with a shoulder a pair of tubular members each having a lateral opening whereby the one end of each member is U-shaped in cross section, said members fit ting over the terminal portions of the superheater section and bearing against the shoulders thereof, one of said members having a right hand internal thread and the other having a left hand internal thread, a double ended screw having engagement with said internal threads, and turning tool engaging means located centrally of the screw.

In testimony whereof I affix my signature.

ALBERT JEAVONS. 

